Aluminum Mirror Pack, Borofloat, 12.7 mm, λ/10, 450-700 nm, Qty 10

This is a 10-pack of the very popular 05D20ER.1 Broadband Aluminum Mirrors. These mirrors are excellent general purpose, broadband reflectors. The 12.7 mm (1/2 inch) diameter mirrors are made from a 3.1 mm thick Borofloat® 33 substrate which is coated with the ER.1 aluminum coating. Borofloat® 33 has low thermal expansion and is an excellent substrate for most applications. The ER.1 enhanced aluminum coating may be used wherever a broadband visible and near infrared reflector is needed. A multilayer dielectric stack deposited over the aluminum film boosts reflectance and improves the durability of the coating. The 05D20ER.1 has an average reflectivity greater than 93% from 450–700 nm. These mirrors have a λ/10 surface flatness and a 15-5 surface quality.